Which motherboard slot?
Which motherboard slot?
You can connect it to that PCIe port, but it won't work on PCIe 4.
Top position always wins. 3.0 functions properly in 4.0 version.
All PCIe ports support both backward and forward compatibility.
... is an overly general statement that could use caveats over what is & isn't backwards & forwards compatible. I feel any overthinking is justified in a situation where any given user of the site is not as 100% knowledgeable as ourselves. In this case, why else would OP be asking?
It's a concise declaration with no conditions. The system works smoothly.